a) Sketch all three quadratic functions on the same set of coordinate axes.

a)

Compared to the graph of (y)=x2+2\left( y \right) = {x^2} + 2(y)=x2+2:
• (2y)=x2+2\left( {2y} \right) = {x^2} + 2(2y)=x2+2 is a vertical stretch about the x-axis by a factor of ____________.
• (y3)=x2+2\left( {\frac{y}{3}} \right) = {x^2} + 2(3y​)=x2+2 is a vertical stretch about the x-axis by a factor of ____________.